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Norman Hartnell design for the Queen Mother in 1937 - Thomas began his career working for Hartnell.
A remarkable 'time warp' Royal archive amassed by the Queen's dressmaker has been found inside his old country home.
The late Ian Thomas was a dress designer for members of the Royal Family, including Her Majesty, for over 30 years.
As an apprentice he worked alongside the renowned fashion designer Norman Hartnell on creating the Queen's coronation dress in 1953.
His archive includes embroidered samples of the gown worn by Elizabeth II for the historic ceremony in Westminster Abbey that was broadcast to millions.
Mr Thomas also designed outfits for the Queen Mother and Princess Margaret.